Motor-boat.



R. KUSAMURA.

MOTOR BOAT.

APPLICATION FILED MAY 27, 1913. 1,091,355. Patented Mar.24,1911

2 SHEETS-SHEET 1.

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R. KUSAMURA.

MOTOR BOAT.

APPLICATION FILED MAY 27, 1913. 1,09 1,355. Patented Mar. 24, 191 1 2 SHEETS-SHEET 2.

lvdmwoeo f j i COLUMBIA PLANOGRAPII CO..w,\sHmuTnN. 04 c UNITED STATES PATENT OFFTE RYOKUWAN KUSAMURA, OF KINGS COUNTY, CALIFORNIA.

MOTOR-BOAT.

To all whom it may concern.-

Be it known that I, RYOKUWAN KUsA- MURA, a subject of the Emperor of Japan, residing in the county of Kings, in the State of California, have invented certain new and useful Improvements in Motor-Boats, of which the following is a specification.

This invention relates to motor boats, and more particularly to the type known as pedomotor, and has for its object the provision of a boat provided with side propellerwheels and adapted to be propelled by pedaling, as in a bicycle.

An important object of the invention is to provide a device of this character which is so constructed that either propeller-wheel may be disconnected from the source of power simply by shifting a lever in order that the boat may be turned easily and much more quickly than could be done by means of a rudder.

Other objects and advantages such as simplicity, cheapness, eificiency, durability, ease of motion and the general improvement of the art will be clearly brought out in the following specification and illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of my im proved boat, Fig. 2 is a top plan view thereof, Fig. 3 is a longitudinal sectional view, Fig. l is a cross sectional view through the propeller shaft, Fig. 5 is a fragmentary top plan view illustrating the means for disconnecting the power from a propeller-wheel, and Fig. 6 is a perspective view of the sliding shifting member.

Referring more particularly to the drawings, the numeral 1 designates the hull of my improved boat which comprises a bottom or floor 2, and a vertical shell or wall 3. The hull may be of any desired shape, size and material.

Rigidly mounted upon the bottom 2 and adjacent the stern of the boat is an upright support 4 upon which is secured a seat 5 which may be of a type used on bicycles and which may be adjusted vertically, if desired, to vary the height for different operators. Journaled through suitable hearings on the support t is a crank shaft 6 which is provided with pedals 7 and to which is secured a sprocket 8. Secured upon the bottom 2 approximately midway of the boat are upright plates 9 which are adapted to support the various portions of the motor to be described.

Specification of Letters Patent.

Applicat'ion filed May 27, 1913.

outer ends propeller-wheels 29.

Patented Mar. 24:, 1914. Serial No. 770,212.

J ournaled through the rear portion of the plates 9 is a transverse shaft 10 upon which is mounted a sprocket 11 about which is trained a chain 12 which is further trained about the sprocket 8. A fly-wheel 13 and gear-wheel 14 are also mounted upon the shaft 10, the gear 14 meshing with a gear 15 secured upon a transverse shaft 16. shaft 16 is supported by the plates 9 and carries a gear 17 which meshes with a pinion 18 secured upon a transverse shaft 19 journaled transversely of the forward ends of the plates 9. J ournaled below the shaft 19 is a similar shaft 20 which carries a pinion 21 meshing with a pinion 22 secured upon the shaft 19. This intermediate pinion 21. also meshes with a pinion 23 secured upon the propelling shaft which is indicated as a whole by the numeral 24. A pair of flywheels 25 are mounted upon the shaft 19 for steadying the motion of the various shafts and gears mentioned.

The propeller shaft 24: comprises a central sleeve 26 upon which the pinion 23 is keyed, the sleeve 26 being keyed upon a short shaft 27 which extends beyond the ends of the shaft 26. Tubular shafts 28 extend through the wall 3 of the boat and carry upon their The pro peller shafts 28 encircle the short shaft 27 and are provided upon their inner ends with clutch teeth 30 adapted to interlock with similar clutch teeth 31 formed upon the sleeve 26. It will thus be seen that the tubular shafts 28 are slidable upon the shaft 27 and through the walls 3 of the boat. In view of the fact that the tubular shafts 28 are loosely mounted upon the shaft 27, it will be obvious that as long as the clutch teeth 30 and 31 are in engagement the propeller-wheels 29 will be rotated. However, if the tubular shafts 28 should be moved outwardly a sufficient distance to disengage the clutch teeth 30 and 31, it will be seen that the propeller-wheels 29 will cease rotating. In accomplishing this I provide adjacent each side of the boat shifting members 32 which are supported by guide tracks 33 secured upon the bottom 2 of the boat. The shifting members 32 are provided with heads 34 within which are formed openings 35 to receive the tubular shafts 28. The heads 3% are provided with inclined portions 36 which engage collars 37 formed on the propeller shafts 28. Coil springs 38 surround the propeller shafts 28 and abut against the collars The 37 and the wall 3 of the boat. Each of the shifting members 32 has connected therewith a lever 39 as shown at 40, said levers being pivoted within brackets 41 secured upon the bottom of the boat. As shown in the drawings, the levers 39 are in their forward position and the propeller shafts 28 are then held in engagement with the sleeve 26 by virtue of the action of the springs 38. By pulling either of the levers 39 rearwarly one of the shifting members 32 will be moved rearwardly whereupon the inclined portion 36 will engage the collar 37 thus moving the tubular shaft 28 outwardly of the boat and upon the shaft 27 as a guide and against the resistance of the spring 38. Either propeller-wheel may in this manner be disconnected and rendered idle.

The ordinary steering mechanism comprises a vertical rod 42 journaled through the bottom of the boat and provided upon its upper end with a transverse rod 43 which terminates in upturned handles 44 adapted to be held by the operator at all times while the boat is in motion. Beneath the bottom of the boat the rod 42 is provided with lateral extensions 45 to which are connected rearwardly extending rods 46 which are connected with a cross bar 47 formed on the rudder post 48 which carries the rudder 49 12nd which is ournaled in the bottom of the oat.

It will thus be seen that the train of gears described will cause the propeller-wheels 29 to rotate and drive the boat, and with great steadiness owing to the fly-wheels 13 and 25. For ordinary steering purposes the rudder 39 is sufficient but in order to turn abruptly or within a limited space the disconnection of either of the propeller-wheels may be made by means of the shifting members described, thus allowing the other propellerwheel to rotate independently and turn the boat as desired.

Having thus described my invention what I claim is:

1. A motor boat comprising a hull, a propeller shaft journaled transversely thereof, said shaft being provided with clutch faces, propellers mounted on said shaft and provided with clutch faces engaging said first named clutch faces, means for rotating said shaft, springs for normally holding said clutch faces in engagement, and wedging means for breaking the connection of said clutch faces.

2. A motor boat comprising a hull, a propeller shaft journaled transversely therethrough, said shaft comprising a central portion provided with clutch teeth and extended portions, propellers loosely mounted on said extended portions and provided with clutch teeth in engagement with said first named clutch teeth, and means for breaking the engagement of either of said clutches, said means comprising a slidable wedge and a lever for operating the wedge.

3. A motor boat comprising a hull, a propeller shaft journaled transversely thereof, said shaft comprising a central portion provided wlth clutch members and extending portions, propellers secured on sleeves loosely mounted on said extended portions, said sleeves belng provided with clutch members in engagement with said firstnamed clutch members, collars mounted on said sleeves, springs engaging said collars and said hull for maintaining said clutch members in engagement, and means for disconnecting elther of sald clutch members, said -means comprising slidable wedge members engaging said collars and levers for operating said wedges.

4. A motor boat comprising a hull, a proipeller shaft journaled transversely thereof, said shaft comprising a central portlon provided with clutch members and extending portions, sleeves loosely mounted on said ex- .tending portions and provided with clutch members engaging said first named clutch members, propellers secured on said sleeves,

collars secured on said sleeves, springs engaging said collars and said. hull for hold- :ing said clutch members in engagement, and means for breaklng sald engagement, said means comprising members movable longitudinally of the hull, inclined faces on sald members adapted to engage said collars, and

upright levers pivoted upon said hull and pivotally connected with said members.

5. A motor boat comprising a hull, a standard mounted thereon, a seat secured upon said standard, a crank journaled through said standard and provided with pedals, a sprocket secured upon said crank, a shaft, a sprocket on said shaft, a chain trained about said sprockets, a gear on said shaft, a propeller shaft, a train of gears connecting said first named shaft with said propeller shaft, propellers loosely mounted on said propeller shaft, clutch members formed on said propeller shaft and on said propellers, springs for normally holding said clutch members in engagement, and wedge operated means for disconnecting said clutch members.

In testimony whereof 1 hereto affix my signature in the presence of two witnesses.

RYOKUWAN KUSAMURA.

Witnesses:

GEO. ONESATE, R. MASAI.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner. of Patents, Washington, D. 0. 

